package com.hmdp.service.impl;

import cn.hutool.core.bean.BeanUtil;
import cn.hutool.core.bean.copier.CopyOptions;
import cn.hutool.core.lang.UUID;
import cn.hutool.core.util.RandomUtil;
import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
import com.hmdp.dto.LoginFormDTO;
import com.hmdp.dto.Result;
import com.hmdp.dto.UserDTO;
import com.hmdp.entity.User;
import com.hmdp.mapper.UserMapper;
import com.hmdp.service.IUserService;
import com.hmdp.utils.RegexUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.data.redis.core.StringRedisTemplate;
import org.springframework.stereotype.Service;

import javax.servlet.http.HttpSession;
import java.util.HashMap;
import java.util.Map;
import java.util.Random;
import java.util.concurrent.TimeUnit;

import static com.hmdp.utils.RedisConstants.*;
import static com.hmdp.utils.SystemConstants.USER_NICK_NAME_PREFIX;

/**
 * <p>
 * 服务实现类
 * </p>
 *
 * @author 虎哥
 * @since 2021-12-22
 */
@Service
public class UserServiceImpl extends ServiceImpl<UserMapper, User> implements IUserService {
    @Autowired
    StringRedisTemplate stringRedisTemplate;
    public static String CODE="code";
    @Override
    public Result sendCode(String phone, HttpSession session) {
//        校验手机号
            if(RegexUtils.isPhoneInvalid(phone)){
                return Result.fail("手机号错误");
            }
//        不符合返回错误信息
//        符合生成验证码
        String code = RandomUtil.randomNumbers(6);
//        保存验证码到session
//        session.setAttribute("code",code);
//        发送验证码
        stringRedisTemplate.opsForValue().set(LOGIN_CODE_KEY+phone,code,LOGIN_CODE_TTL, TimeUnit.MINUTES);
        log.debug("发送短信验证码成功，验证码"+code);
        //        返回ok
        return Result.ok();
    }

    @Override
    public Result login(LoginFormDTO loginForm, HttpSession session) {
//        校验手机号和验证码
        String phone = loginForm.getPhone();
        if(RegexUtils.isPhoneInvalid(phone)){
            return Result.fail("手机号不合法");
        };


//        Object codeyes = session.getAttribute(CODE);
//        Todo: 从redis中获取验证码
        String codeyes = stringRedisTemplate.opsForValue().get(LOGIN_CODE_KEY + phone);


        String code = loginForm.getCode();
        if(codeyes==null||!codeyes.equals((code))){
            return Result.fail("验证码错误");
        }
//        查看用户是否注册
        User user = query().eq("phone", phone).one();
        if(user==null){
            user = creatUserwithPhone(phone);
        }
        UserDTO userDTO= BeanUtil.copyProperties(user,UserDTO.class);
//        session.setAttribute("user",userDTO);
        String token= UUID.randomUUID().toString(true);
//        Todo：转hash
        String tokenkey = LOGIN_USER_KEY + token;
        Map<String, Object> MapUserDTO = BeanUtil.beanToMap(userDTO,new HashMap<>(), CopyOptions.create().setIgnoreNullValue(true).setFieldValueEditor((fieldName,fieldValue)->fieldValue.toString()));

        stringRedisTemplate.opsForHash().putAll(tokenkey,MapUserDTO);
//        设置token有效期
        stringRedisTemplate.expire(tokenkey,30L,TimeUnit.MINUTES);

        return Result.ok(token);
    }

    private User creatUserwithPhone(String phone) {
            User user=new User();
            user.setPhone(phone);
            user.setNickName(USER_NICK_NAME_PREFIX+RandomUtil.randomString(10));
            save(user);

            return user;
    }
}
